]> www.infradead.org Git - users/jedix/linux-maple.git/commit
ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
authorJoe Perches <joe@perches.com>
Wed, 14 Oct 2015 08:09:40 +0000 (01:09 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 27 Oct 2015 00:51:51 +0000 (09:51 +0900)
commit3f90898b43b4e7fea7a58f34f886a78b9f753e52
treedb718e3ec01f01c12594d4e678692ea6294815aa
parent3043def89ac220e0719f0c1b97f27b139a44f2b5
ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings

[ Upstream commit 077cb37fcf6f00a45f375161200b5ee0cd4e937b ]

It seems that kernel memory can leak into userspace by a
kmalloc, ethtool_get_strings, then copy_to_user sequence.

Avoid this by using kcalloc to zero fill the copied buffer.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/core/ethtool.c